Hello, this thing on? No? Yeah, yeah, very funny.
Anyway, a cult of Test Subjects and Test Builders have assembled to wage war with Aperture Science...
You know the rest.

HeartLove Labs

Collection by Alejo

"HeartLove Labs: Only love and science."
or is it?
You are a test subject that is coursing a very simple series of tests chambers when suddenly you are moved outside the course and forced to work your way back thru a series of rooms on the facility's u

Starter Pack: Six of Lasers

Collection by Canadian Laserbear

Featuring six test chambers which utilise lasers in some shape or form.
Overall difficulty: Medium

Lambda v2.0

Collection by Lambðaðelta

Lambda's back and it's time for 2.0.
Can you do it again?

Spark the ACR Core's tests to P-body

Collection by WalKer'

Spark the ACR Core accidently turned P-body off permanently the only way for her to be turned back on is for ATLAS to go through the tests to the chamber with her emergency turn on switch and press it to re-activate her.

easy box

Collection by Twins of Doom

easy
easy
so easy

Exterminadora

Collection by Burixer85

¡La base de todos los puzles!

Oracle Initiative - Chapter One

Collection by Loweboy, The Last Monroe

For this series of tests Aperture Science requests all employees to report to Oracle Testing Lab 87D92C to begin your mandatory testing. When your testing shift begins arrive at the testing center promptly, and well rested. You will be doing great things f

XxdDany's tests

Collection by Dany_Ways

Test chambers by XxdDany

Chip Plant Gamma

Collection by ZooC0d3

Shut down the chip plant before the corrupted AI is circulated around the Multiverse!
A brand new collection of maps - more will be added at a later date.
Difficulty: Easy/Medium

Wonderland

Collection by racker92

Wonderland-themed Portal 2 chambers.

The Lost Levels

Collection by Hyenalogy89

First series of my Portal 2 maps.

HackerHead's Portal 2 Maps

Collection by CriticismBadger

A collection of maps I put together on Portal 2 hoping to challenge and engage people in their freetime.

Return Of Test Chambers 1-10

Collection by L0L_Osi

Think With Portals. For Science.

Testing Grounds

Collection by Doisman

My first (and only so far) Portal 2 maps. I'm bad at making these maps so be gentle with your hate

I created the same map twice with a different title and description for each to see what people liked better. One is more of a parody of Cave Johnson's multiverse commentary and helps the player out more as the title itself is a hint to the map's nature.

PORTAL 2

Collection by El Patronsito

Mapas de portal 2

Portal 2

Collection by TTK Maria

Drowning Cube

Collection by Undies!

Portal Test Chambers: All Tests revolve around a 'Drowning Cube'

IF TIME NEVER PASSED

Collection by FrozenStriker

This collection shows how portal 2 maps would have looked like in the past

LorddooH's AperturE

Collection by I'm stupide turret

Skill Evalution Chambers

Collection by Vixc

All you have to do is think. Think with portals.

Pastry Pred's Chambers

Collection by a fishtank full of lean

Donut/Pastrypredator/Irc's own levels.
WARNING : These levels are in no way good in any way, to be honest. I just wanted a collection of the levels I build ( and like )

TYPE_TesT#****

Collection by 3x³+C

4ePOPA|_0

VENTS

Collection by R..

: D

The BTE Pprogram

Collection by Nickvr628

This is the BTE Testing Initiative. This first part focuses on the gel testing elements.
More tests coming soon.